CN104777097A - FRP-concrete interface adhesive property testing device and method - Google Patents
FRP-concrete interface adhesive property testing device and method Download PDFInfo
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- CN104777097A CN104777097A CN201510209463.3A CN201510209463A CN104777097A CN 104777097 A CN104777097 A CN 104777097A CN 201510209463 A CN201510209463 A CN 201510209463A CN 104777097 A CN104777097 A CN 104777097A
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- frp
- hydraulic jack
- girder steel
- adhesive property
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- 239000004567 concrete Substances 0.000 title claims abstract description 39
- 230000001070 adhesive Effects 0.000 title claims abstract description 22
- 239000000835 fibers Substances 0.000 claims abstract description 21
- 239000010720 hydraulic oils Substances 0.000 claims abstract description 10
- 239000004744 fabrics Substances 0.000 claims abstract description 7
- 230000003068 static Effects 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 52
- 239000010959 steel Substances 0.000 claims description 52
- 238000009434 installation Methods 0.000 claims description 21
- 239000011888 foils Substances 0.000 claims description 13
- 238000000034 methods Methods 0.000 claims description 4
- 239000003921 oils Substances 0.000 claims description 4
- 230000000875 corresponding Effects 0.000 claims description 3
- 238000006073 displacement reactions Methods 0.000 claims description 3
- 230000001737 promoting Effects 0.000 claims description 3
- 239000000463 materials Substances 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000002131 composite materials Substances 0.000 description 1
- 230000002079 cooperative Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering processes Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reactions Methods 0.000 description 1
- 239000006072 pastes Substances 0.000 description 1
Abstract
Description
Technical field
The present invention relates to a kind of proving installation and the method for testing that measure FRP-concrete interface adhesive property, belong to concrete construction field.
Background technology
In field of civil engineering, reinforced concrete structure is along with the time is aging by generating material, structural damage.So, in order to ensure the security of damaged structure, the reinforcement technique of damaged structure must be studied, its performance is promoted.Current reinforcement means mostly adopts fiber cloth or steel plate to reinforce.A large amount of experimental studies shows, adopts FRP(fibre reinforced composites) reinforced concrete structural element reinforced, its failure mode is not often that FRP is pulled off, the interface delaminating damage that deficiency causes but FRP and concrete interface bond.The concrete interfacial adhesion of FRP-ensures the cooperative basis of bi-material, and therefore the result of study of FRP-concrete interface performance can be provided fundamental basis for project planner.
What current specification adopted is the adhesive property just drawing test to measure fiber cloth and concrete interface.From stressed angle, beam test meets true stressing conditions most.Beam test loads complicated, lacks structure simple, the charger of convenient disassembly.
Summary of the invention
The technical problem to be solved in the present invention is for above-mentioned the deficiencies in the prior art, provides a kind of structure simple, the proving installation of the mensuration FRP-concrete interface adhesive property of easy accessibility.
For solving the problems of the technologies described above, the technical solution used in the present invention is: the proving installation measuring FRP-concrete interface adhesive property, comprises outside framework, hydraulic jack, hydraulic oil pump and test specimen, force snesor, stationary singnal detecting and analysing system and computing machine; Described outside framework is made up of left girder steel, right girder steel, upper girder steel and lower girder steel; Described lower girder steel is installed moveable hinge bearing B; Described hydraulic jack is installed on described moveable hinge bearing B, and hydraulic jack is connected with hydraulic oil pump by oil pipe; Installing force sensor in described hydraulic jack; This force snesor is connected with stationary singnal detecting and analysing system by signal wire; Moveable hinge bearing A is installed in described test specimen upper end, and test specimen is arranged between moveable hinge bearing A and hydraulic jack;
Described surface of test piece pastes fibre plate; Fibre plate surface mount foil gauge; Foil gauge is connected with stationary singnal detecting and analysing system by wire; The output terminal of stationary singnal detecting and analysing system is connected with computing machine.
Further, described outside framework is formed by connecting by high-strength bolt by left girder steel, right girder steel, upper girder steel and lower girder steel.
Further, described moveable hinge bearing A is provided with the steel cushion block for the protection of upper girder steel.
Further, described proving installation is provided with 2 moveable hinge bearing A, and 2 moveable hinge bearing A are separately positioned on the two ends of test specimen.
Further, in the middle part of test specimen, gap is established in incision.
Further, the width of described gap is 49-52mm, and the degree of depth is 48-52mm.
Further, the width of gap is 50mm, and the degree of depth is 50mm.
Another object of the present invention is to provide a kind of method of testing adopting the proving installation measuring FRP-concrete interface adhesive property, the method comprises the steps:
The preparation of (a) test specimen: the concrete sample of making, concrete sample surface mount fibre plate;
(b) assembling charger: moveable hinge bearing B is placed on lower girder steel, hydraulic jack is placed on moveable hinge bearing B, to hydraulic jack installing force sensor, the test specimen that need test is arranged between hydraulic jack and moveable hinge bearing A, steel cushion block is placed on moveable hinge bearing A top, promoting hydraulic jack makes steel cushion block touch girder steel, controlled loading, makes hydraulic jack only bear the deadweight of test specimen;
(c) connecting test device: at the fiber cloth surface mount foil gauge of concrete test block, foil gauge is connected with stationary singnal testing and analyzing system by wire; Force snesor is connected with stationary singnal detecting and analysing system by signal wire; Stationary singnal detecting and analysing system output terminal is connected with computing machine;
D () tests: to hydraulic jack load application, open stationary singnal testing and analyzing system, and zeroing, by the strain stress of test block surface fiber sheet in Static Test and Analysis system log (SYSLOG) loading procedure (t)and corresponding vertical load P (t);
E () is according to ε (t)and P (t)obtain load-displacement curve, test completes.
Beneficial effect of the present invention: proving installation of the present invention overcomes existing beam coomb's test Coomb and loads complicated defect, meets the true stressing conditions of FRP-concrete interface most, structure is simple, convenient disassembly.Material needed for method of testing of the present invention and instrument few, can test at the scene of building, be applicable to working-yard research FRP-concrete interface performance.
Accompanying drawing explanation
Fig. 1 is the single unit system figure of proving installation of the present invention.
In figure: 1-test specimen; 2-fiber cloth; 3-gap; 4-moveable hinge bearing A; 5-steel cushion block; 6-force snesor; 7-hydraulic jack; 8-oil pipe; 9-hydraulic oil pump; The upper girder steel of 10-; The left girder steel of 11-; The right girder steel of 12-; Girder steel under 13-; 14-high-strength bolt; 15-foil gauge; 16-signal; 17-wire; 18-computing machine; 19-moveable hinge bearing B; 20-outside framework; 21-stationary singnal test analysis system.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is elaborated.
Embodiment 1
Be illustrated in figure 1 a kind of proving installation measuring FRP-concrete interface adhesive property of the present invention, comprise outside framework 20, hydraulic jack 7, hydraulic oil pump 19 and test specimen 1, force snesor 6, stationary singnal detecting and analysing system 21 and computing machine 18; Outside framework 20 is made up of left girder steel 11, right girder steel 12, upper girder steel 10 and lower girder steel 13; Lower girder steel 13 is installed moveable hinge bearing B4; Described hydraulic jack 7 is installed on described moveable hinge bearing B4, and hydraulic jack 7 is connected with hydraulic oil pump 9 by oil pipe 8; Installing force sensor 6 in hydraulic jack 7; This force snesor 6 is connected with stationary singnal detecting and analysing system 21 by signal wire 16; Moveable hinge bearing A4 is installed in test specimen 1 upper end, and test specimen is arranged between moveable hinge bearing A4 and hydraulic jack.
During test, the hydraulic oil source 9 of hydraulic jack 7 can control vertical loading.Apply vertical load by hydraulic jack 7 pairs of test blocks 1, bear counter-force by outside framework 20 self-equilibrating.
Test specimen 1 surface mount fibre plate 2; Fibre plate 2 surface mount foil gauge 15; Foil gauge 15 is connected with stationary singnal detecting and analysing system 21 by wire 17; The output terminal of stationary singnal detecting and analysing system 21 is connected with computing machine 18, thus test FRP-concrete interface adhesive property.
In the present embodiment, outside framework 20 is formed by connecting by high-strength bolt 14 by left girder steel 11, right girder steel 12, upper girder steel 10 and lower girder steel 13, can bear hydraulic jack 7 when loading, and its counter-force given by moveable hinge bearing 19, realizes counter-force self-equilibrating.
In the present embodiment, moveable hinge bearing A4 is provided with the steel cushion block 5 for the protection of upper girder steel 10, is unlikely to damage girder steel 10 when ensureing that concrete sample destroys.
In the present embodiment, proving installation is provided with 2 moveable hinge bearing A4, and 2 moveable hinge bearing A4 are separately positioned on the two ends of test specimen 1.
In the present embodiment, in the middle part of test specimen 1, gap 3 is established in incision.
In the present embodiment, the width of gap 3 is 49-52mm, and the degree of depth is 48-52mm; Preferably, the width of gap 3 is 50mm, and the degree of depth is 50mm.
Adopt proving installation of the present invention can measure the Complete Curve of load and strain.
Embodiment 2
The proving installation adopting embodiment to go measures the method for testing of FRP-concrete interface adhesive property, and the method comprises the steps:
The preparation of (a) test specimen: the concrete sample of making, concrete sample surface mount fibre plate 2;
(b) assembling charger: moveable hinge bearing B4 is placed on lower girder steel 13, hydraulic jack 7 is placed on moveable hinge bearing B19, to hydraulic jack 7 installing force sensor 6, the test specimen 1 that need test is arranged between hydraulic jack 7 and moveable hinge bearing A4, steel cushion block 5 is placed on moveable hinge bearing A4 top, promoting hydraulic jack 7 makes steel cushion block 5 touch girder steel 10, controlled loading, makes hydraulic jack 7 only bear the deadweight of test specimen 1;
(c) connecting test device: at the fiber cloth 2 surface mount foil gauge 15 of concrete test block 1, foil gauge 15 is connected with stationary singnal testing and analyzing system 21 by wire 17; Force snesor 6 is connected with stationary singnal detecting and analysing system 21 by signal wire 16; Stationary singnal detecting and analysing system 21 output terminal is connected with computing machine 18;
D () tests: to hydraulic jack 7 load application, open stationary singnal testing and analyzing system 21, and zeroing, records the strain stress of test block 1 surface fiber sheet 2 in loading procedure by Static Test and Analysis system 21 (t)and corresponding vertical load P (t);
E () is according to ε (t)and P (t)obtain load-displacement curve, test completes.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510209463.3A CN104777097A (en) | 2015-04-29 | 2015-04-29 | FRP-concrete interface adhesive property testing device and method |
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| CN201510209463.3A CN104777097A (en) | 2015-04-29 | 2015-04-29 | FRP-concrete interface adhesive property testing device and method |
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| CN104777097A true CN104777097A (en) | 2015-07-15 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807707A (en) * | 2015-04-29 | 2015-07-29 | 江苏城市职业学院 | Testing device and testing method for determining double-side shear performance of FRP (Fiber Reinforced Plastic)-concrete |
| CN106644761A (en) * | 2016-12-14 | 2017-05-10 | 大连理工大学 | Testing method for testing shearing constitutive relation of rock-concrete interface |
| CN107655925A (en) * | 2017-08-22 | 2018-02-02 | 南昌大学 | Organic/inorganic composite material interface shrinkage test device and method |
| CN108693110A (en) * | 2018-08-01 | 2018-10-23 | 北方工业大学 | A kind of sliding test device and FRP sheet materials and concrete binding pilot system |
| CN108918264A (en) * | 2018-06-29 | 2018-11-30 | 上海市建筑科学研究院 | Assembled integral concrete construction sealing material filleting adhesive property detection method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807707A (en) * | 2015-04-29 | 2015-07-29 | 江苏城市职业学院 | Testing device and testing method for determining double-side shear performance of FRP (Fiber Reinforced Plastic)-concrete |
| CN106644761A (en) * | 2016-12-14 | 2017-05-10 | 大连理工大学 | Testing method for testing shearing constitutive relation of rock-concrete interface |
| CN106644761B (en) * | 2016-12-14 | 2019-11-19 | 大连理工大学 | A kind of test method of measurement rock-concrete interface shearing constitutive relation |
| CN107655925A (en) * | 2017-08-22 | 2018-02-02 | 南昌大学 | Organic/inorganic composite material interface shrinkage test device and method |
| CN108918264A (en) * | 2018-06-29 | 2018-11-30 | 上海市建筑科学研究院 | Assembled integral concrete construction sealing material filleting adhesive property detection method |
| CN108693110A (en) * | 2018-08-01 | 2018-10-23 | 北方工业大学 | A kind of sliding test device and FRP sheet materials and concrete binding pilot system |
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Application publication date: 20150715 |